Being Young : My Mental Health

The goal of this prospective cohort study is to study the evolution of adolescent and young people's mental health over a 12-month period after presentation to an emergency department or crisis service for an acute psychiatric episode. This study aims to: * Describe the mental health care trajectories of adolescents and young adults after an acute psychiatric episode. * Identify psychiatric disorders (such as anxiety, depression, eating disorders, suicidal thoughts, sleep, etc.) at the different time points of the study (at 3, 6, 9 and 12 months after inclusion) ; * Assess the quality of life and functional capacity in daily activities of participants at each study time point ; * Determine the socio-demographic, psychosocial and environmental factors associated with improving mental health over time and with mental health help seeking. Patients aged from 10 to 24, presenting to one of the participating centers for an acute psychiatric episode, and who agree to participate, will be included in the study. Participants will have to complete an online questionnaire every 3 months over a 12-month period (at baseline (T0), at 3 months (T3), at 6 months (T6), at 9 month (T9) and at 12 months (T12))